@book { PhotochemischerSmog,
    title = "Photochemischer Smog",
    subtitle = "Darstellung eines Umweltproblems und statistische Analyse von Ozonmessungen in Hamburg",
    author = "Guido {Henschel}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832427818",
    url = "https://m.diplom.de/document/218515"
}